diff --git a/src/nitro/room/object/data/IObjectData.ts b/src/nitro/room/object/data/IObjectData.ts
index f158baad..1df0cc76 100644
--- a/src/nitro/room/object/data/IObjectData.ts
+++ b/src/nitro/room/object/data/IObjectData.ts
@@ -7,10 +7,11 @@ export interface IObjectData
     isUnique: boolean;
     uniqueNumber: number;
     uniqueSeries: number;
+    rarityLevel: number;
     flags: number;
     parseWrapper(wrapper: IMessageDataWrapper): void;
     initializeFromRoomObjectModel(model: IRoomObjectModel): void;
     writeRoomObjectModel(model: IRoomObjectModel): void;
     getLegacyString(): string;
     compare(data: IObjectData): boolean;
-}
\ No newline at end of file
+}
diff --git a/src/nitro/room/object/data/ObjectDataBase.ts b/src/nitro/room/object/data/ObjectDataBase.ts
index f04d41f6..a5cc3350 100644
--- a/src/nitro/room/object/data/ObjectDataBase.ts
+++ b/src/nitro/room/object/data/ObjectDataBase.ts
@@ -72,6 +72,11 @@ export class ObjectDataBase implements IObjectData
         return this._uniqueSeries;
     }
 
+    public get rarityLevel(): number
+    {
+        return -1;
+    }
+
     public get flags(): number
     {
         return this._flags;
@@ -81,4 +86,4 @@ export class ObjectDataBase implements IObjectData
     {
         this._flags = flags;
     }
-}
\ No newline at end of file
+}
diff --git a/src/nitro/room/object/data/type/MapDataType.ts b/src/nitro/room/object/data/type/MapDataType.ts
index 824f46f1..578549b3 100644
--- a/src/nitro/room/object/data/type/MapDataType.ts
+++ b/src/nitro/room/object/data/type/MapDataType.ts
@@ -70,6 +70,17 @@ export class MapDataType extends ObjectDataBase
         return this._data[key];
     }
 
+    public get rarityLevel(): number
+    {
+        if(!this._data || !this._data.length) return -1;
+
+        const state = this._data[MapDataType.RARITY];
+
+        if(state === undefined || state === null) return -1;
+
+        return parseInt(state);
+    }
+
     // TODO: How to get the keys?
     public get data()
     {